barrelUtil Namespace Reference

Functions
float	calculatePhiWindow (float Xmax, const GeomDet &det, const TrajectoryStateOnSurface &state)
float	computeWindowSize (const GeomDet *det, const TrajectoryStateOnSurface &tsos, const MeasurementEstimator &est)
bool	overlap (float phi, const GeometricSearchDet &gsdet, float phiWin)

Function Documentation

float barrelUtil::calculatePhiWindow ( float  Xmax, const GeomDet &  det, const TrajectoryStateOnSurface &  state  )

inline

Definition at line 16 of file BarrelUtil.h.

References funct::abs(), PV3DBase< T, PVType, FrameType >::barePhi(), TrajectoryStateOnSurface::globalPosition(), TrajectoryStateOnSurface::localPosition(), bookConverter::min, edm::shift, GeomDet::surface(), and Surface::toGlobal().

Referenced by computeWindowSize().

                                                       {
    
    LocalPoint startPoint = state.localPosition();
    LocalVector shift( Xmax , 0. , 0.);
    LocalPoint shift1 = startPoint + shift;
    LocalPoint shift2 = startPoint + (-shift); 
    //LocalPoint shift2( startPoint); //original code;
    //shift2 -= shift;
    
    auto phi1 = det.surface().toGlobal(shift1).barePhi();
    auto phi2 = det.surface().toGlobal(shift2).barePhi();
    auto phiStart = state.globalPosition().barePhi();
    auto phiWin = std::min(std::abs(phiStart-phi1),std::abs(phiStart-phi2));
    
    return phiWin;
  }

float barrelUtil::computeWindowSize ( const GeomDet *  det, const TrajectoryStateOnSurface &  tsos, const MeasurementEstimator &  est  )

inline

Definition at line 35 of file BarrelUtil.h.

References calculatePhiWindow(), MeasurementEstimator::maximalLocalDisplacement(), GeomDet::surface(), x, and SiStripMonitorClusterAlca_cfi::xmax.

                                                {
    auto xmax = 
      est.maximalLocalDisplacement(tsos, det->surface()).x();
    return calculatePhiWindow( xmax, *det, tsos);
  }

bool barrelUtil::overlap ( float  phi, const GeometricSearchDet &  gsdet, float  phiWin  )

inline

Definition at line 46 of file BarrelUtil.h.

References constexpr, Surface::phiSpan(), rangesIntersect(), and GeometricSearchDet::surface().

                                                                         {
    // introduce offset (extrapolated point and true propagated point differ by 0.0003 - 0.00033, 
    // due to thickness of Rod of 1 cm) 
    constexpr float phiOffset = 0.00034;  //...TOBE CHECKED LATER...
    phiWin += phiOffset;
    
    // detector phi range
    std::pair<float,float> phiRange(phi-phiWin, phi+phiWin);
    
    return rangesIntersect(phiRange, gsdet.surface().phiSpan(), PhiLess());
  }